Vapor-burner



A. MAcLENNAN.

VAPOR BURNER. APPLlcAnoN' FILED MAY lo. 1920.

1,381,21LG, l Pmmdm@ 14,1921.

@Www/' ALEXANDER MACLEN'NAN, OF CLAPI-IAM, LONDON, ENGLAND.

VAPOR-BURNER.

Application led May l0,

To @ZZ lwhom it may concern:

Be it known that I, ALEXANDER MaoLnN- NAN, a subject of the King of Great Britain, residing at JI28 Grafton Square, Clapham, in the county of London, England, have invented certain new and useful Improvements lelating to Vapor-Burners, of which the following is a specification. n

This invention relates to vapor-burning apparatus of the kind in which liquid fuel is delivered to a vaporizing tube carrying flame spreaders whence it passes to another tube disposed below the said vaporizing tube and furnished with a burner orifice immediately below each flame spreader, so that the vapor in burning at these orifices, heats the flaine spreadersvand thereby heats the vaporizing tube. flreviously, in such burners the vaporizing and burner .tubes which have been connected by a vertical tube, have each been bent into'substantially a circular shape, especially in the case of large burners, and the flame spreaders which have usually taken the form of disks of cast iron with upwardly projecting stems drilled to receive the vaporizing tube have been spaced uniformly around the latter. In a more usual form the said two tubes have been straight and supported at one end by a standard so as to project over a shallow tray. The tray usually contained asbestos and was prowided with air holes to enable spirit poured into the tray to burn in order to supply the requisite heat for starting the combustion of the liquid fuel. It has been found in order to va-porize such fuels as kerosene, that the length of the tubes may not be reduced below a certain minimum and although this is not a drawback when the burner is to be placed in the fire-boxes of American stoves, the necessary length of the tubes renders the apparatus so large that it will not fit easily into the small grates of stoves, such as are commonly used in this country. Also, in these burners, which are designed for use in closed fire-boxes, there is a-tendency for the flames to become eX- tinguished in spite of the flame deflectors, if the burners are employed in open grates. T he chief object of the present invention is to provide a burner which will fit in the small open grates commonly found in this country and will not be readily extinguished when used therein.

According to this invention, both the Vaporizing tube and the burner tube are bent Specification of Letters Patent.

Patented J une is, 1921.

1920. serial No. 380,157.

so as to assume somewhat of a horse-shoe shape. A flame spreader is carried on each limb of the vaporizing tube and the curvature of each tube is such that the flame spreaders are in contact or almost in contact with one another. As a result, the burner occupies considerably less space and the lower tube may serve as a base which rests in the tray so that the supporting standard is not necessary. Owing to the flame spreaders being` placed nearer together, the heat is more concentrated and more easily maintains the combustion of the vapor emitted from the burner orifices especially when the burner is employed in an open gra-te. This latter function is also assisted by the walls of the tray which extend upward sufficiently far to shield the burner orifices from horizontal currents of cool air.

.ln order that the invention may be clearly understood and readily carried into effect the same will now be described more fully with reference -to the accompanying drauings, in which Figure l is a side elevation and F ig. 2 is a plan of one embodiment of the invention.

a is the .f'aporizing tube and the burner tube, both substantially of horse-shoe shape. o is the tray in which the tube Z) rests. (Z, e are the two ila-me spreaders or deeeting baflies. They are arranged to slide on the tube a so that they may be adjusted so as to be vertically over the burner orifices f, g in the tube Z). Zt is the fuel tank adapted to hold about one gallon of kerosene or similar fuel. lt is placed about live feet above the burner and isV connected to the vaporizing tube a by a pipe Z0. The pipe Zi: is connected to the side of the tank ZL near the bottoan and is fitted with the needle valve Z for regulating the How of the fuel.

The tray c is of cast iron and, although it is shown rectangular in shape, it may conform more nearly to the shape of the tube b. lts walls are extended upward to shield the burner holes j', g. The tube b is fixed in the tray by means of a clamping bar m and screw a. The tray 0 is linedwith asbestos and has perforations p in raised bosses at the bottoni for athnitting the necessary air. The tray c is also placed on feet g to enable the air to pass below the tray.

ln starting the burner, the tank ZL is filled with fuel and the valve Z is closed. A small quantity of methylated spirit is placed in the tray c and ignited. This heats the flamespreaders CZ, c the vaporizing tube ct and the iron filings contained therein. When the spirit is burned, the valve Z is opened slightly, so that fuel slowly passes froin the tank L, through pipe k into the tube o where p in the lire boxes of stoves, ooppers, geysers and so forth.

.i'Vhat l claim and desire to secure by Letters APatent of the United States 1s l. In a vapor burner, the combination of a base, doubly coiledpipe forming upper and lower horse-shoe shaped bends, the up* per bend being in communication with `a source of liquid fuel and the upper surface of the lower bend being perforated to form burner orifices, and a plurality of flame spreaders adjustable on the upper bends above said burner orificesj and having their peripheries close together.

2. in a vapor burner, the combination of a base, a doubly coiled pipe forming upper and lower horse-shoe shaped bends, the upper bend beingl in communication with a source of liquid fuel` and the upper surface of the lower bend being perforated to form burner orifices, tie base having a complete external upturned wall rising above the level of said burner orifices, and a plurality of flame spreaders adjustable on the upper bends above said burner orifices and having their peripheries close together.

3. ln apparatus for vaporizing and burning liquid fuel the combination of an upper tube having two limbs one of which is connected to a source of liquid fuel, a lower tube communicating with the other limb of the said upper tube and having two limbs arranged Asubstantially parallel with the limbs of the upper tube and vertically be` low same, burner orifices being provided in the upper surfaces of the limbs of the lower tube,.and two iame spreaders on the limbs of the upper tube over the said burner orifices, the peripheries of the said flame spreaders being spa-ced within half an inchV of each other.

In apparatusfor vaporizing and burning liquid fuel lthe combination of a horseshoe shaped upper tube carrying two flame spreaders close together and a lower tube of corresponding' shape communicating with the said upper tube and having in its upper surfaceburner orifices below the said flame spreaders. Y

5. ln apparatus for vaporizing and burning liquid fuel the combination of a horseshoe shaped upper tube carrying two flame spie-aders close together, a lower tube of corresponding shape communicating with the said upper tube and having in its upper surface 4burner orifices below the said flame spreaders, and a tray supporting the said lower tube and having Vupstanding walls eX- tending above the level ofthe said burner orifices.

ALEXANDER. MACLENNAN. 

